/////////////////////////////////////////////////////////////////////////////// 
// Copyright (C) 2002-2023, Open Design Alliance (the "Alliance"). 
// All rights reserved. 
// 
// This software and its documentation and related materials are owned by 
// the Alliance. The software may only be incorporated into application 
// programs owned by members of the Alliance, subject to a signed 
// Membership Agreement and Supplemental Software License Agreement with the
// Alliance. The structure and organization of this software are the valuable  
// trade secrets of the Alliance and its suppliers. The software is also 
// protected by copyright law and international treaty provisions. Application  
// programs incorporating this software must include the following statement 
// with their copyright notices:
//   
//   This application incorporates Open Design Alliance software pursuant to a license 
//   agreement with Open Design Alliance.
//   Open Design Alliance Copyright (C) 2002-2023 by Open Design Alliance. 
//   All rights reserved.
//
// By use of this software, its documentation or related materials, you 
// acknowledge and accept the above terms.
///////////////////////////////////////////////////////////////////////////////


using Teigha.Core;
using Teigha.TD;

namespace SmartPlant.OdDrawingsLib.ExSelection
{
    public class OdExViewSelectionObjectsByMouse
    {
        public enum OperationState
        {
            None,
            Finished,
            Processing
        }

        private OdDbObjectIdArray m_selected { get; set; }

        private bool m_selectByRectange = false;

        public OdExViewSelectionObjectsByMouse()
        {
            m_selectionByRectangle = new OdExViewSelectionObjectByRectangle();
            m_selectionByPoint = new OdExViewSelectionObjectByPoint();
            m_selected = new OdDbObjectIdArray();
        }

        private OdExViewSelectionObjectByRectangle m_selectionByRectangle { get; set; }
        private OdExViewSelectionObjectByPoint m_selectionByPoint { get; set; }

        public void Init(OdDbObjectId spaceId, OdGsView view, short pickBox = 1)
        {
            m_selectionByRectangle.Init(spaceId, view);
            m_selectionByPoint.Init(spaceId, view, pickBox);
        }

        public void UnInit()
        {
            m_selectionByRectangle.UnInit();
            m_selectionByPoint.UnInit();
        }

        public OdDbObjectIdArray LastSelectedIds { get { return new OdDbObjectIdArray(m_selected); } }

        public OperationState OnMouseDown(int xMouse, int yMouse)
        {
            m_selected.Clear();
            return OnMouseDown(xMouse, yMouse, m_selected);
        }

        public void OnMouseUp(int xMouse, int yMouse)
        {
            OnMouseUp(xMouse, yMouse, m_selected);
        }

        public void OnMouseMove(int xMouse, int yMouse)
        {
            if (m_selectByRectange)
            {
                if (m_selectionByRectangle.ChangeSelectionRectangle(xMouse, yMouse))
                    return;
            }
        }

        private OperationState OnMouseDown(int xMouse, int yMouse, OdDbObjectIdArray selectedObjects)
        {
            if (m_selectionByPoint.Select(xMouse, yMouse, selectedObjects))
                return OperationState.Finished;
            else if (m_selectionByRectangle.StartSelect(xMouse, yMouse))
            {
                m_selectByRectange = true;
                return OperationState.Processing;
            }
            return OperationState.None;
        }

        private void OnMouseUp(int xMouse, int yMouse, OdDbObjectIdArray selectedObjects)
        {
            if (m_selectByRectange)
            {
                if (m_selectionByRectangle.FinishSelect(xMouse, yMouse, selectedObjects))
                {
                    m_selectByRectange = false;
                    return;
                }
            }
        }
    }

}